STATEMENTS OF CONSOLIDATED INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues	$ 2,846us-gaap_Revenues	$ 2,577us-gaap_Revenues	$ 2,540us-gaap_Revenues
Expenses:
Operation and maintenance	1,258	1,053	958
Depreciation and amortization	768	685	729
Taxes other than income taxes	224	225	214
Total	2,250us-gaap_CostsAndExpenses	1,963us-gaap_CostsAndExpenses	1,901us-gaap_CostsAndExpenses
Operating Income	596us-gaap_OperatingIncomeLoss	614us-gaap_OperatingIncomeLoss	639us-gaap_OperatingIncomeLoss
Other Income (Expense):
Interest and other finance charges	(109)us-gaap_InterestAndDebtExpense	(99)us-gaap_InterestAndDebtExpense	(141)us-gaap_InterestAndDebtExpense
Interest on transition and system restoration bonds	(118)	(133)	(147)
Other, net	14us-gaap_OtherNonoperatingIncomeExpense	33us-gaap_OtherNonoperatingIncomeExpense	41us-gaap_OtherNonoperatingIncomeExpense
Total	(213)us-gaap_NonoperatingIncomeExpense	(199)us-gaap_NonoperatingIncomeExpense	(247)us-gaap_NonoperatingIncomeExpense
Income Before Income Taxes	383	415	392
Income tax expense	131us-gaap_IncomeTaxExpenseBenefit	146us-gaap_IncomeTaxExpenseBenefit	113us-gaap_IncomeTaxExpenseBenefit
Net Income	$ 252us-gaap_NetIncomeLoss	$ 269us-gaap_NetIncomeLoss	$ 279us-gaap_NetIncomeLoss

Interest and debt related expenses associated with transition and system restoration bonds.

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Total costs of sales and operating expenses for the period.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Interest and debt related expenses associated with nonoperating financing activities of the entity.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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The net result for the period of deducting operating expenses from operating revenues.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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All taxes not related to income of the entity or excise or sales taxes levied on the revenue of the entity that are not reported elsewhere. These taxes could include production, real estate, personal property, and pump tax.

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The amount of operating expenses for the period that are associated with the utility's normal revenue producing operation; including selling, general, and administrative expenses, costs incurred for routine plant repairs and maintenance, and operations.

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